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Optical nonlinearity in chalcogenide glasses for near-infrared all-optical devices

AKIRA SAITOH1,* , KEIJI TANAKA2

Affiliation

  1. Department of Electrical and Electronic Engineering, Kitami Institute of Technology, Kitami, 090-8507, Japan
  2. Department of Applied Physics, Graduate School of Engineering, Hokkaido University, Sapporo, 060-8628, Japan

Abstract

We consider tactics for attaining maximal optical nonlinearity at telecommunication wavelengths of 1.5 µm (ħω ≈ 0.8 eV). The nonlinearity becomes greater in a material with a smaller optical gap, but it must be wider than ~1 eV for needed transparency. This trade-off makes the chalcogenide glass suitable for fiber devices (~1 m), including optical switches and intensity stabilizers. However, for waveguide devices with optical path lengths of ~1 cm, greater nonlinearity is required. We propose Se-loaded zeolites, which possess greater intensity-dependent nonlinear coefficients than those of pure Se by three orders of magnitude, is promising for this purpose..

Keywords

Chalcogenide glass, NIR, Optical nonlinearity.

Submitted at: Jan. 6, 2011
Accepted at: Jan. 26, 2011

Citation

AKIRA SAITOH, KEIJI TANAKA, Optical nonlinearity in chalcogenide glasses for near-infrared all-optical devices, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 1, pp. 65-68 (2011)